X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/mediawiki.git/blobdiff_plain/d7967d5e4460e08b6b258307afbca0596b18a3dd..19e297c21b10b1b8a3acad5e73fc71dcb35db44a:/includes/api/ApiQueryInfo.php

diff --git a/includes/api/ApiQueryInfo.php b/includes/api/ApiQueryInfo.php
index bebf4006..8ffb2e22 100644
--- a/includes/api/ApiQueryInfo.php
+++ b/includes/api/ApiQueryInfo.php
@@ -1,11 +1,10 @@
 <?php
-
-/*
- * Created on Sep 25, 2006
- *
+/**
  * API for MediaWiki 1.8+
  *
- * Copyright (C) 2006 Yuri Astrakhan <Firstname><Lastname>@gmail.com
+ * Created on Sep 25, 2006
+ *
+ * Copyright © 2006 Yuri Astrakhan <Firstname><Lastname>@gmail.com
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -19,177 +18,689 @@
  *
  * You should have received a copy of the GNU General Public License along
  * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
  */
 
-if (!defined('MEDIAWIKI')) {
+if ( !defined( 'MEDIAWIKI' ) ) {
 	// Eclipse helper - will be ignored in production
-	require_once ('ApiQueryBase.php');
+	require_once( 'ApiQueryBase.php' );
 }
 
 /**
  * A query module to show basic page information.
- * 
- * @addtogroup API
+ *
+ * @ingroup API
  */
 class ApiQueryInfo extends ApiQueryBase {
 
-	public function __construct($query, $moduleName) {
-		parent :: __construct($query, $moduleName, 'in');
+	private $fld_protection = false, $fld_talkid = false,
+		$fld_subjectid = false, $fld_url = false,
+		$fld_readable = false, $fld_watched = false,
+		$fld_preload = false, $fld_displaytitle = false;
+
+	private $tokenFunctions;
+
+	public function __construct( $query, $moduleName ) {
+		parent::__construct( $query, $moduleName, 'in' );
+	}
+
+	public function requestExtraData( $pageSet ) {
+		global $wgDisableCounters;
+
+		$pageSet->requestField( 'page_restrictions' );
+		$pageSet->requestField( 'page_is_redirect' );
+		$pageSet->requestField( 'page_is_new' );
+		if ( !$wgDisableCounters ) {
+			$pageSet->requestField( 'page_counter' );
+		}
+		$pageSet->requestField( 'page_touched' );
+		$pageSet->requestField( 'page_latest' );
+		$pageSet->requestField( 'page_len' );
 	}
 
-	public function requestExtraData($pageSet) {
-		$pageSet->requestField('page_is_redirect');
-		$pageSet->requestField('page_is_new');
-		$pageSet->requestField('page_counter');
-		$pageSet->requestField('page_touched');
-		$pageSet->requestField('page_latest');
-		$pageSet->requestField('page_len');
+	/**
+	 * Get an array mapping token names to their handler functions.
+	 * The prototype for a token function is func($pageid, $title)
+	 * it should return a token or false (permission denied)
+	 * @return array(tokenname => function)
+	 */
+	protected function getTokenFunctions() {
+		// Don't call the hooks twice
+		if ( isset( $this->tokenFunctions ) ) {
+			return $this->tokenFunctions;
+		}
+
+		// If we're in JSON callback mode, no tokens can be obtained
+		if ( !is_null( $this->getMain()->getRequest()->getVal( 'callback' ) ) ) {
+			return array();
+		}
+
+		$this->tokenFunctions = array(
+			'edit' => array( 'ApiQueryInfo', 'getEditToken' ),
+			'delete' => array( 'ApiQueryInfo', 'getDeleteToken' ),
+			'protect' => array( 'ApiQueryInfo', 'getProtectToken' ),
+			'move' => array( 'ApiQueryInfo', 'getMoveToken' ),
+			'block' => array( 'ApiQueryInfo', 'getBlockToken' ),
+			'unblock' => array( 'ApiQueryInfo', 'getUnblockToken' ),
+			'email' => array( 'ApiQueryInfo', 'getEmailToken' ),
+			'import' => array( 'ApiQueryInfo', 'getImportToken' ),
+		);
+		wfRunHooks( 'APIQueryInfoTokens', array( &$this->tokenFunctions ) );
+		return $this->tokenFunctions;
 	}
 
-	public function execute() {
+	public static function getEditToken( $pageid, $title ) {
+		// We could check for $title->userCan('edit') here,
+		// but that's too expensive for this purpose
+		// and would break caching
+		global $wgUser;
+		if ( !$wgUser->isAllowed( 'edit' ) ) {
+			return false;
+		}
+
+		// The edit token is always the same, let's exploit that
+		static $cachedEditToken = null;
+		if ( !is_null( $cachedEditToken ) ) {
+			return $cachedEditToken;
+		}
 
+		$cachedEditToken = $wgUser->editToken();
+		return $cachedEditToken;
+	}
+
+	public static function getDeleteToken( $pageid, $title ) {
+		global $wgUser;
+		if ( !$wgUser->isAllowed( 'delete' ) ) {
+			return false;
+		}
+
+		static $cachedDeleteToken = null;
+		if ( !is_null( $cachedDeleteToken ) ) {
+			return $cachedDeleteToken;
+		}
+
+		$cachedDeleteToken = $wgUser->editToken();
+		return $cachedDeleteToken;
+	}
+
+	public static function getProtectToken( $pageid, $title ) {
+		global $wgUser;
+		if ( !$wgUser->isAllowed( 'protect' ) ) {
+			return false;
+		}
+
+		static $cachedProtectToken = null;
+		if ( !is_null( $cachedProtectToken ) ) {
+			return $cachedProtectToken;
+		}
+
+		$cachedProtectToken = $wgUser->editToken();
+		return $cachedProtectToken;
+	}
+
+	public static function getMoveToken( $pageid, $title ) {
 		global $wgUser;
+		if ( !$wgUser->isAllowed( 'move' ) ) {
+			return false;
+		}
+
+		static $cachedMoveToken = null;
+		if ( !is_null( $cachedMoveToken ) ) {
+			return $cachedMoveToken;
+		}
+
+		$cachedMoveToken = $wgUser->editToken();
+		return $cachedMoveToken;
+	}
 
-		$params = $this->extractRequestParams();
-		$fld_protection = false;
-		if(!is_null($params['prop'])) {
-			$prop = array_flip($params['prop']);
-			$fld_protection = isset($prop['protection']);
+	public static function getBlockToken( $pageid, $title ) {
+		global $wgUser;
+		if ( !$wgUser->isAllowed( 'block' ) ) {
+			return false;
 		}
-		if(!is_null($params['token'])) {
-			$token = $params['token'];
-			$tok_edit = $this->getTokenFlag($token, 'edit');
-			$tok_delete = $this->getTokenFlag($token, 'delete');
-			$tok_protect = $this->getTokenFlag($token, 'protect');
-			$tok_move = $this->getTokenFlag($token, 'move');
+
+		static $cachedBlockToken = null;
+		if ( !is_null( $cachedBlockToken ) ) {
+			return $cachedBlockToken;
 		}
-		
+
+		$cachedBlockToken = $wgUser->editToken();
+		return $cachedBlockToken;
+	}
+
+	public static function getUnblockToken( $pageid, $title ) {
+		// Currently, this is exactly the same as the block token
+		return self::getBlockToken( $pageid, $title );
+	}
+
+	public static function getEmailToken( $pageid, $title ) {
+		global $wgUser;
+		if ( !$wgUser->canSendEmail() || $wgUser->isBlockedFromEmailUser() ) {
+			return false;
+		}
+
+		static $cachedEmailToken = null;
+		if ( !is_null( $cachedEmailToken ) ) {
+			return $cachedEmailToken;
+		}
+
+		$cachedEmailToken = $wgUser->editToken();
+		return $cachedEmailToken;
+	}
+
+	public static function getImportToken( $pageid, $title ) {
+		global $wgUser;
+		if ( !$wgUser->isAllowed( 'import' ) ) {
+			return false;
+		}
+
+		static $cachedImportToken = null;
+		if ( !is_null( $cachedImportToken ) ) {
+			return $cachedImportToken;
+		}
+
+		$cachedImportToken = $wgUser->editToken();
+		return $cachedImportToken;
+	}
+
+	public function execute() {
+		$this->params = $this->extractRequestParams();
+		if ( !is_null( $this->params['prop'] ) ) {
+			$prop = array_flip( $this->params['prop'] );
+			$this->fld_protection = isset( $prop['protection'] );
+			$this->fld_watched = isset( $prop['watched'] );
+			$this->fld_talkid = isset( $prop['talkid'] );
+			$this->fld_subjectid = isset( $prop['subjectid'] );
+			$this->fld_url = isset( $prop['url'] );
+			$this->fld_readable = isset( $prop['readable'] );
+			$this->fld_preload = isset( $prop['preload'] );
+			$this->fld_displaytitle = isset( $prop['displaytitle'] );
+		}
+
 		$pageSet = $this->getPageSet();
-		$titles = $pageSet->getGoodTitles();
+		$this->titles = $pageSet->getGoodTitles();
+		$this->missing = $pageSet->getMissingTitles();
+		$this->everything = $this->titles + $this->missing;
 		$result = $this->getResult();
 
-		$pageIsRedir = $pageSet->getCustomField('page_is_redirect');
-		$pageIsNew = $pageSet->getCustomField('page_is_new');
-		$pageCounter = $pageSet->getCustomField('page_counter');
-		$pageTouched = $pageSet->getCustomField('page_touched');
-		$pageLatest = $pageSet->getCustomField('page_latest');
-		$pageLength = $pageSet->getCustomField('page_len');
-
-		if ($fld_protection && count($titles) > 0) {
-			$this->addTables('page_restrictions');
-			$this->addFields(array('pr_page', 'pr_type', 'pr_level', 'pr_expiry'));
-			$this->addWhereFld('pr_page', array_keys($titles));
-
-			$db = $this->getDB();
-			$res = $this->select(__METHOD__);
-			while($row = $db->fetchObject($res)) {
-				$protections[$row->pr_page][] = array(
-								'type' => $row->pr_type,
-								'level' => $row->pr_level,
-								'expiry' => Block::decodeExpiry( $row->pr_expiry, TS_ISO_8601 )
-							);
+		uasort( $this->everything, array( 'Title', 'compare' ) );
+		if ( !is_null( $this->params['continue'] ) ) {
+			// Throw away any titles we're gonna skip so they don't
+			// clutter queries
+			$cont = explode( '|', $this->params['continue'] );
+			if ( count( $cont ) != 2 ) {
+				$this->dieUsage( 'Invalid continue param. You should pass the original ' .
+						'value returned by the previous query', '_badcontinue' );
+			}
+			$conttitle = Title::makeTitleSafe( $cont[0], $cont[1] );
+			foreach ( $this->everything as $pageid => $title ) {
+				if ( Title::compare( $title, $conttitle ) >= 0 ) {
+					break;
+				}
+				unset( $this->titles[$pageid] );
+				unset( $this->missing[$pageid] );
+				unset( $this->everything[$pageid] );
 			}
-			$db->freeResult($res);
 		}
-		
-		foreach ( $titles as $pageid => $title ) {
-			$pageInfo = array (
-				'touched' => wfTimestamp(TS_ISO_8601, $pageTouched[$pageid]),
-				'lastrevid' => intval($pageLatest[$pageid]),
-				'counter' => intval($pageCounter[$pageid]),
-				'length' => intval($pageLength[$pageid]),
-			);
 
-			if ($pageIsRedir[$pageid])
-				$pageInfo['redirect'] = '';
+		$this->pageRestrictions = $pageSet->getCustomField( 'page_restrictions' );
+		$this->pageIsRedir = $pageSet->getCustomField( 'page_is_redirect' );
+		$this->pageIsNew = $pageSet->getCustomField( 'page_is_new' );
+
+		global $wgDisableCounters;
+
+		if ( !$wgDisableCounters ) {
+			$this->pageCounter = $pageSet->getCustomField( 'page_counter' );
+		}
+		$this->pageTouched = $pageSet->getCustomField( 'page_touched' );
+		$this->pageLatest = $pageSet->getCustomField( 'page_latest' );
+		$this->pageLength = $pageSet->getCustomField( 'page_len' );
+
+		// Get protection info if requested
+		if ( $this->fld_protection ) {
+			$this->getProtectionInfo();
+		}
+
+		if ( $this->fld_watched ) {
+			$this->getWatchedInfo();
+		}
+
+		// Run the talkid/subjectid query if requested
+		if ( $this->fld_talkid || $this->fld_subjectid ) {
+			$this->getTSIDs();
+		}
+
+		if ( $this->fld_displaytitle ) {
+			$this->getDisplayTitle();
+		}
 
-			if ($pageIsNew[$pageid])
+		foreach ( $this->everything as $pageid => $title ) {
+			$pageInfo = $this->extractPageInfo( $pageid, $title );
+			$fit = $result->addValue( array(
+				'query',
+				'pages'
+			), $pageid, $pageInfo );
+			if ( !$fit ) {
+				$this->setContinueEnumParameter( 'continue',
+						$title->getNamespace() . '|' .
+						$title->getText() );
+				break;
+			}
+		}
+	}
+
+	/**
+	 * Get a result array with information about a title
+	 * @param $pageid int Page ID (negative for missing titles)
+	 * @param $title Title object
+	 * @return array
+	 */
+	private function extractPageInfo( $pageid, $title ) {
+		$pageInfo = array();
+		if ( $title->exists() ) {
+			global $wgDisableCounters;
+
+			$pageInfo['touched'] = wfTimestamp( TS_ISO_8601, $this->pageTouched[$pageid] );
+			$pageInfo['lastrevid'] = intval( $this->pageLatest[$pageid] );
+			$pageInfo['counter'] = $wgDisableCounters
+				? ""
+				: intval( $this->pageCounter[$pageid] );
+			$pageInfo['length'] = intval( $this->pageLength[$pageid] );
+
+			if ( $this->pageIsRedir[$pageid] ) {
+				$pageInfo['redirect'] = '';
+			}
+			if ( $this->pageIsNew[$pageid] ) {
 				$pageInfo['new'] = '';
+			}
+		}
 
-			if (!is_null($token)) {
-				// Currently all tokens are generated the same way, but it might change
-				if ($tok_edit)
-					$pageInfo['edittoken'] = $wgUser->editToken();
-				if ($tok_delete)
-					$pageInfo['deletetoken'] = $wgUser->editToken();
-				if ($tok_protect)
-					$pageInfo['protecttoken'] = $wgUser->editToken();
-				if ($tok_move)
-					$pageInfo['movetoken'] = $wgUser->editToken();
-			}
-			
-			if($fld_protection) {
-				if (isset($protections[$pageid])) {
-					$pageInfo['protection'] = $protections[$pageid];
-					$result->setIndexedTagName($pageInfo['protection'], 'pr');
+		if ( !is_null( $this->params['token'] ) ) {
+			$tokenFunctions = $this->getTokenFunctions();
+			$pageInfo['starttimestamp'] = wfTimestamp( TS_ISO_8601, time() );
+			foreach ( $this->params['token'] as $t ) {
+				$val = call_user_func( $tokenFunctions[$t], $pageid, $title );
+				if ( $val === false ) {
+					$this->setWarning( "Action '$t' is not allowed for the current user" );
 				} else {
-					$pageInfo['protection'] = array();
+					$pageInfo[$t . 'token'] = $val;
 				}
 			}
+		}
 
-			$result->addValue(array (
-				'query',
-				'pages'
-			), $pageid, $pageInfo);
-		}
-
-		// Get edit tokens for missing titles if requested
-		// Delete, protect and move tokens are N/A for missing titles anyway
-		if($tok_edit)
-		{
-			$missing = $pageSet->getMissingTitles();
-			$res = $result->getData();
-			foreach($missing as $pageid => $title)
-				$res['query']['pages'][$pageid]['edittoken'] = $wgUser->editToken();
-		}
-	}
-
-	protected function getAllowedParams() {
-		return array (
-			'prop' => array (
-				ApiBase :: PARAM_DFLT => NULL,
-				ApiBase :: PARAM_ISMULTI => true,
-				ApiBase :: PARAM_TYPE => array (
-					'protection'
-				)),
-			'token' => array (
-				ApiBase :: PARAM_DFLT => NULL,
-				ApiBase :: PARAM_ISMULTI => true,
-				ApiBase :: PARAM_TYPE => array (
-					'edit',
-					'delete',
-					'protect',
-					'move',
-				)),
+		if ( $this->fld_protection ) {
+			$pageInfo['protection'] = array();
+			if ( isset( $this->protections[$title->getNamespace()][$title->getDBkey()] ) ) {
+				$pageInfo['protection'] =
+					$this->protections[$title->getNamespace()][$title->getDBkey()];
+			}
+			$this->getResult()->setIndexedTagName( $pageInfo['protection'], 'pr' );
+		}
+
+		if ( $this->fld_watched && isset( $this->watched[$title->getNamespace()][$title->getDBkey()] ) ) {
+			$pageInfo['watched'] = '';
+		}
+
+		if ( $this->fld_talkid && isset( $this->talkids[$title->getNamespace()][$title->getDBkey()] ) )	{
+			$pageInfo['talkid'] = $this->talkids[$title->getNamespace()][$title->getDBkey()];
+		}
+
+		if ( $this->fld_subjectid && isset( $this->subjectids[$title->getNamespace()][$title->getDBkey()] ) ) {
+			$pageInfo['subjectid'] = $this->subjectids[$title->getNamespace()][$title->getDBkey()];
+		}
+
+		if ( $this->fld_url ) {
+			$pageInfo['fullurl'] = $title->getFullURL();
+			$pageInfo['editurl'] = $title->getFullURL( 'action=edit' );
+		}
+		if ( $this->fld_readable && $title->userCanRead() ) {
+			$pageInfo['readable'] = '';
+		}
+
+		if ( $this->fld_preload ) {
+			if ( $title->exists() ) {
+				$pageInfo['preload'] = '';
+			} else {
+				$text = null;
+				wfRunHooks( 'EditFormPreloadText', array( &$text, &$title ) );
+
+				$pageInfo['preload'] = $text;
+			}
+		}
+
+		if ( $this->fld_displaytitle ) {
+			if ( isset( $this->displaytitles[$title->getArticleId()] ) ) {
+				$pageInfo['displaytitle'] = $this->displaytitles[$title->getArticleId()];
+			} else {
+				$pageInfo['displaytitle'] = $title->getPrefixedText();
+			}
+		}
+
+		return $pageInfo;
+	}
+
+	/**
+	 * Get information about protections and put it in $protections
+	 */
+	private function getProtectionInfo() {
+		$this->protections = array();
+		$db = $this->getDB();
+
+		// Get normal protections for existing titles
+		if ( count( $this->titles ) ) {
+			$this->resetQueryParams();
+			$this->addTables( array( 'page_restrictions', 'page' ) );
+			$this->addWhere( 'page_id=pr_page' );
+			$this->addFields( array( 'pr_page', 'pr_type', 'pr_level',
+					'pr_expiry', 'pr_cascade', 'page_namespace',
+					'page_title' ) );
+			$this->addWhereFld( 'pr_page', array_keys( $this->titles ) );
+
+			$res = $this->select( __METHOD__ );
+			foreach ( $res as $row ) {
+				$a = array(
+					'type' => $row->pr_type,
+					'level' => $row->pr_level,
+					'expiry' => Block::decodeExpiry( $row->pr_expiry, TS_ISO_8601 )
+				);
+				if ( $row->pr_cascade ) {
+					$a['cascade'] = '';
+				}
+				$this->protections[$row->page_namespace][$row->page_title][] = $a;
+
+				// Also check old restrictions
+				if ( $this->pageRestrictions[$row->pr_page] ) {
+					$restrictions = explode( ':', trim( $this->pageRestrictions[$row->pr_page] ) );
+					foreach ( $restrictions as $restrict ) {
+						$temp = explode( '=', trim( $restrict ) );
+						if ( count( $temp ) == 1 ) {
+							// old old format should be treated as edit/move restriction
+							$restriction = trim( $temp[0] );
+
+							if ( $restriction == '' ) {
+								continue;
+							}
+							$this->protections[$row->page_namespace][$row->page_title][] = array(
+								'type' => 'edit',
+								'level' => $restriction,
+								'expiry' => 'infinity',
+							);
+							$this->protections[$row->page_namespace][$row->page_title][] = array(
+								'type' => 'move',
+								'level' => $restriction,
+								'expiry' => 'infinity',
+							);
+						} else {
+							$restriction = trim( $temp[1] );
+							if ( $restriction == '' ) {
+								continue;
+							}
+							$this->protections[$row->page_namespace][$row->page_title][] = array(
+								'type' => $temp[0],
+								'level' => $restriction,
+								'expiry' => 'infinity',
+							);
+						}
+					}
+				}
+			}
+		}
+
+		// Get protections for missing titles
+		if ( count( $this->missing ) ) {
+			$this->resetQueryParams();
+			$lb = new LinkBatch( $this->missing );
+			$this->addTables( 'protected_titles' );
+			$this->addFields( array( 'pt_title', 'pt_namespace', 'pt_create_perm', 'pt_expiry' ) );
+			$this->addWhere( $lb->constructSet( 'pt', $db ) );
+			$res = $this->select( __METHOD__ );
+			foreach ( $res as $row ) {
+				$this->protections[$row->pt_namespace][$row->pt_title][] = array(
+					'type' => 'create',
+					'level' => $row->pt_create_perm,
+					'expiry' => Block::decodeExpiry( $row->pt_expiry, TS_ISO_8601 )
+				);
+			}
+		}
+
+		// Cascading protections
+		$images = $others = array();
+		foreach ( $this->everything as $title ) {
+			if ( $title->getNamespace() == NS_FILE ) {
+				$images[] = $title->getDBkey();
+			} else {
+				$others[] = $title;
+			}
+		}
+
+		if ( count( $others ) ) {
+			// Non-images: check templatelinks
+			$lb = new LinkBatch( $others );
+			$this->resetQueryParams();
+			$this->addTables( array( 'page_restrictions', 'page', 'templatelinks' ) );
+			$this->addFields( array( 'pr_type', 'pr_level', 'pr_expiry',
+					'page_title', 'page_namespace',
+					'tl_title', 'tl_namespace' ) );
+			$this->addWhere( $lb->constructSet( 'tl', $db ) );
+			$this->addWhere( 'pr_page = page_id' );
+			$this->addWhere( 'pr_page = tl_from' );
+			$this->addWhereFld( 'pr_cascade', 1 );
+
+			$res = $this->select( __METHOD__ );
+			foreach ( $res as $row ) {
+				$source = Title::makeTitle( $row->page_namespace, $row->page_title );
+				$this->protections[$row->tl_namespace][$row->tl_title][] = array(
+					'type' => $row->pr_type,
+					'level' => $row->pr_level,
+					'expiry' => Block::decodeExpiry( $row->pr_expiry, TS_ISO_8601 ),
+					'source' => $source->getPrefixedText()
+				);
+			}
+		}
+
+		if ( count( $images ) ) {
+			// Images: check imagelinks
+			$this->resetQueryParams();
+			$this->addTables( array( 'page_restrictions', 'page', 'imagelinks' ) );
+			$this->addFields( array( 'pr_type', 'pr_level', 'pr_expiry',
+					'page_title', 'page_namespace', 'il_to' ) );
+			$this->addWhere( 'pr_page = page_id' );
+			$this->addWhere( 'pr_page = il_from' );
+			$this->addWhereFld( 'pr_cascade', 1 );
+			$this->addWhereFld( 'il_to', $images );
+
+			$res = $this->select( __METHOD__ );
+			foreach ( $res as $row ) {
+				$source = Title::makeTitle( $row->page_namespace, $row->page_title );
+				$this->protections[NS_FILE][$row->il_to][] = array(
+					'type' => $row->pr_type,
+					'level' => $row->pr_level,
+					'expiry' => Block::decodeExpiry( $row->pr_expiry, TS_ISO_8601 ),
+					'source' => $source->getPrefixedText()
+				);
+			}
+		}
+	}
+
+	/**
+	 * Get talk page IDs (if requested) and subject page IDs (if requested)
+	 * and put them in $talkids and $subjectids
+	 */
+	private function getTSIDs() {
+		$getTitles = $this->talkids = $this->subjectids = array();
+
+		foreach ( $this->everything as $t ) {
+			if ( MWNamespace::isTalk( $t->getNamespace() ) ) {
+				if ( $this->fld_subjectid ) {
+					$getTitles[] = $t->getSubjectPage();
+				}
+			} elseif ( $this->fld_talkid ) {
+				$getTitles[] = $t->getTalkPage();
+			}
+		}
+		if ( !count( $getTitles ) ) {
+			return;
+		}
+
+		$db = $this->getDB();
+
+		// Construct a custom WHERE clause that matches
+		// all titles in $getTitles
+		$lb = new LinkBatch( $getTitles );
+		$this->resetQueryParams();
+		$this->addTables( 'page' );
+		$this->addFields( array( 'page_title', 'page_namespace', 'page_id' ) );
+		$this->addWhere( $lb->constructSet( 'page', $db ) );
+		$res = $this->select( __METHOD__ );
+		foreach ( $res as $row ) {
+			if ( MWNamespace::isTalk( $row->page_namespace ) ) {
+				$this->talkids[MWNamespace::getSubject( $row->page_namespace )][$row->page_title] =
+						intval( $row->page_id );
+			} else {
+				$this->subjectids[MWNamespace::getTalk( $row->page_namespace )][$row->page_title] =
+						intval( $row->page_id );
+			}
+		}
+	}
+
+	private function getDisplayTitle() {
+		$this->displaytitles = array();
+
+		$pageIds = array_keys( $this->titles );
+
+		if ( !count( $pageIds ) ) {
+			return;
+		}
+
+		$this->resetQueryParams();
+		$this->addTables( 'page_props' );
+		$this->addFields( array( 'pp_page', 'pp_value' ) );
+		$this->addWhereFld( 'pp_page', $pageIds );
+		$this->addWhereFld( 'pp_propname', 'displaytitle' );
+		$res = $this->select( __METHOD__ );
+
+		foreach ( $res as $row ) {
+			$this->displaytitles[$row->pp_page] = $row->pp_value;
+		}
+	}
+
+	/**
+	 * Get information about watched status and put it in $this->watched
+	 */
+	private function getWatchedInfo() {
+		global $wgUser;
+
+		if ( $wgUser->isAnon() || count( $this->everything ) == 0 ) {
+			return;
+		}
+
+		$this->watched = array();
+		$db = $this->getDB();
+
+		$lb = new LinkBatch( $this->everything );
+
+		$this->resetQueryParams();
+		$this->addTables( array( 'watchlist' ) );
+		$this->addFields( array( 'wl_title', 'wl_namespace' ) );
+		$this->addWhere( array(
+			$lb->constructSet( 'wl', $db ),
+			'wl_user' => $wgUser->getID()
+		) );
+
+		$res = $this->select( __METHOD__ );
+
+		foreach ( $res as $row ) {
+			$this->watched[$row->wl_namespace][$row->wl_title] = true;
+		}
+	}
+
+	public function getCacheMode( $params ) {
+		$publicProps = array(
+			'protection',
+			'talkid',
+			'subjectid',
+			'url',
+			'preload',
+			'displaytitle',
 		);
+		if ( !is_null( $params['prop'] ) ) {
+			foreach ( $params['prop'] as $prop ) {
+				if ( !in_array( $prop, $publicProps ) ) {
+					return 'private';
+				}
+			}
+		}
+		if ( !is_null( $params['token'] ) ) {
+			return 'private';
+		}
+		return 'public';
 	}
 
-	protected function getParamDescription() {
-		return array (
-			'prop' => array (
+	public function getAllowedParams() {
+		return array(
+			'prop' => array(
+				ApiBase::PARAM_DFLT => null,
+				ApiBase::PARAM_ISMULTI => true,
+				ApiBase::PARAM_TYPE => array(
+					'protection',
+					'talkid',
+					'watched', # private
+					'subjectid',
+					'url',
+					'readable', # private
+					'preload',
+					'displaytitle',
+					// If you add more properties here, please consider whether they
+					// need to be added to getCacheMode()
+				) ),
+			'token' => array(
+				ApiBase::PARAM_DFLT => null,
+				ApiBase::PARAM_ISMULTI => true,
+				ApiBase::PARAM_TYPE => array_keys( $this->getTokenFunctions() )
+			),
+			'continue' => null,
+		);
+	}
+
+	public function getParamDescription() {
+		return array(
+			'prop' => array(
 				'Which additional properties to get:',
-				' "protection"   - List the protection level of each page'
+				' protection   - List the protection level of each page',
+				' talkid       - The page ID of the talk page for each non-talk page',
+				' watched      - List the watched status of each page',
+				' subjectid    - The page ID of the parent page for each talk page',
+				' url          - Gives a full URL to the page, and also an edit URL',
+				' readable     - Whether the user can read this page',
+				' preload      - Gives the text returned by EditFormPreloadText',
+				' displaytitle - Gives the way the page title is actually displayed',
 			),
 			'token' => 'Request a token to perform a data-modifying action on a page',
+			'continue' => 'When more results are available, use this to continue',
 		);
 	}
 
-
-	protected function getDescription() {
+	public function getDescription() {
 		return 'Get basic page information such as namespace, title, last touched date, ...';
 	}
 
+	public function getPossibleErrors() {
+		return array_merge( parent::getPossibleErrors(), array(
+			array( 'code' => '_badcontinue', 'info' => 'Invalid continue param. You should pass the original value returned by the previous query' ),
+		) );
+	}
+
 	protected function getExamples() {
-		return array (
+		return array(
 			'api.php?action=query&prop=info&titles=Main%20Page',
 			'api.php?action=query&prop=info&inprop=protection&titles=Main%20Page'
 		);
 	}
 
 	public function getVersion() {
-		return __CLASS__ . ': $Id: ApiQueryInfo.php 25457 2007-09-03 20:17:53Z catrope $';
+		return __CLASS__ . ': $Id$';
 	}
 }
-